Factorial Design Example Problems. Jul 26 2012 Factorial Examples. This experiment was conducted by a team of students on a catapult a table-top wooden device used to teach design of experiments and statistical process controlThe catapult has several controllable factors and a response easily measured in a classroom setting.
The advantage of factorial design becomes more pronounced as you add more factors. The average effect of the factor A called the main effect of A can be calculated from the average responses at the high level of A minus the average responses at the low level of A Figure 2. But if the data are already collected when you are introduced to the problem you need to inquire carefully to understand how the experiment was actually conducted to know what model to use in the analysis.
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As the factorial design of experiments is primarily used for screening variables using only two levels are enough to determine whether a variable is significant to affect a process or not. The only design parameter that he can select at this point is the plate material for the battery and he has three possible choices. An experiment is conducted to study three factors of the process which are the percent carbonation A. If k number of variablesfactors are studied to determinescreen the important ones the total.
